Abstract: Digital identities are fundamental to enable digital interactions and transactions on the web. The current digital identity model, based on the "identity = data" paradigm, starts showing its limitations when addressing people's expectations about their identities (in terms of preferences, privacy, trust, etc.) and providing them with degrees of assurance that expectations will be met. An alterative model is introduced, based on the "identity = data + policies" paradigm, along with an underlying policy management framework. Details are given on how this model can address the above issues and how the framework can be implemented. Related technologies and work done by HP Labs Bristol are presented and discussed.